Boiler-feed-water regulator



Sept. 3, 1929. B. GARLLUS 1,726,529

BOILER FEED WATER REGULATOR Filed Aug. 18. 1927 anventoz BernZGarZZu s Patented Sept. 3, 1929.

UNITED STATES I 1,726,529 PATENT" OFFICE.

IBERN'I. GARLLUS, 0F DETROIT, MICHIGAN, ASSIGNOR TO ALEXANDER J. MCDONOUGH,

OF DETROIT, MICHIGAN. T

BOILER-FEED-WATER REGULATOR.

Application filed August 18 1927. Serial No. 213,856.

The invention relates to boiler feed water regulators of that type comprising an expansible tube arranged in an inclined position and connected at its opposite ends respectively with the water space and the steam struction of mechanism by which this expan v -sion and contraction of the tube is transmitted to the valve .or other controlling means for the water feed and the invention therefore consists in the novel construction of this mechanism and the peculiar combination of the same with the actuating expansible tube as hereinafter set forth.

In the drawings: Figure 1 is a perspective view of my improved regulator operating mechanism.

Figure 2 is a perspective view of the bracket which constitutes a portion of the frame and the bearingv for therock lever Figure 3 is a perspective view of the rock leverand Figure 4 is a sectional elevation showing the rock lever with its knife edge bearing and in operative relation to the expansible tube.

As shown in Figure 1, A is the expansible tube formed of any suitable material such as copper having a relatively high coeflicient of expansion. one end of which is formed by a bracketB having a flange Cconnected by rods D to a similar bracket or anchorage (not shownl. One end of thetube is connected to this fixed anchorage by any suitable means (not shown) while the other end of the tube is free to slide through a bearing aperture E in the flange C. The tube may also be supported at 'one or more intermediate points by passing through hearings in cross bars F mounted on the bars D. Thus when so mounted the end of the tube Awhich projects beyon d the flange C is freely movable under force of expansion and contraction.

To obtain accurate regulation it is highly This tube is mounted in aframe desirable that the mechanism for transmitting. movement of the tube to the regulator shouldbe as frictionless aspossible. .At the same time it is desirable to avoid any delicacy in construction which would render the apparatus liable to injury in shipment or installation. This -I have accomplished through the use of a rock lever directlyactu- In detail the bracket beam has mounted thereon an outwardly extending pin or shaft Gr having a V -shaped groove G formed in one side thereof. H is a rocker member having a hub portionI which is sleeved over the pinG and also provided with a knifeedge bearing member J projecting inward and enga'ging the groove G. For convenience in manufacturing the knife edge bearing member J is mounted within a length of tube K being secured thereto by rivets L at one or morepoints in its length. The tube K is then inserted in the huh I and a projecting end of the rivet L engaging a recess M in said hub serves to hold the members K and J against rotation in the hub. The member H is preferably a casting and is provided with the oppositely extending arms H,H recessed to receive the pin of a bar N which forms the lever arm. This bar may be bolted to one -or the other of the recessed arms according to which direction it is desired to have it extend. The casting H is also provided with projecting ears H H forming the mounting for a pin' 0 which constitutesineffect a bell crank arm for the lever N. Thus when the member H is placed in engagement with pin -G the pin 0 will be arranged in alignment resultant of the force longitudinally of the tube A and the force of gravitation operating upon the lever arm N will take a direction along the central plane of the groove G. The angle of the knife edge member J being less than the angle of the groove G and being also centrally arranged in said groove, it is evident that the movement of the tube A in expanding or contracting will rock the member H and lever arm N with the bearing solely upon the knife edge J. Thus the factor of friction is very small and any movement of the tube A is instantaneously transmitted through the lever and connecting link R to the regulator. On the other hand any other force which may be accidentally applied to the lever or to the member H will be resisted by the sleeve K which has only a very slight clearance from the pin G.

In installing regulators upon boilers they must be variously located to suit convenience and space limitation. My improved mechanism provides for such variation, first in that the rocker arm N may be attached to the member H to extend in either direction, second,

' the bracket 13 is provided with two socket bearings G Gr for alternatively receiving the pin G, one of these sockets being above the center line of the tube A and the other below the same; third, the set screw S permits of arranging the groove G at any desired angle; fourth, the tube K may be rotatively adjusted within the hub member I by disengaging the rivet L from the recess M and reengaging it in one or more auxiliary recesses M. These various adjustments enable the workmen installing the apparatus to meet almost any condition encountered. The bracket B is provided with a base flange B having a slot B therein for receiving the clamping bolts that secure the bracket to the boiler wall or front.

YVhat I claim as my invention is:

1. The combination with a longitudinally expansible actuating member, of a frame in which said member is mounted having a bracket at one end thereof providing a hearing for the sliding engagement of the free end of said expansible member, a pin alternatively engageable in sockets in said bracket member respectively above and below the axis of said expansible member to extend in a direction transverse to said axis,arockable member having a hub portion sleeved upon said pin, a bell crank arm projecting from said hub and engageable with the free end of said expansible member and arms projecting oppositely from said hub in a plane transverse to the plane of said bell crank arm and an extension lever arm secured alternatively to said oppositely extending arms;

2. The combination with an expansible tube having its opposite ends connected respectively to the water and to the steam space of a boiler, of a bracket forming the bearing for the free end of said tube, a bell crank lever for transmitting movement of said tube to the regulator to operate it, and a knife edge bearing for said bell crank lever on said bracket.

3. The combination with a longitudinally exnansible member of a bracket formin a l 7 g flange forming the bearing for the free end 7 of said expansible member, a pin projecting transversely from said bracket and having a V-shaped groove therein, a rockable bell crank member having a hub portion loosely sleeved on said pin, and a knife edge bearing projecting inward from said hub to engage said V shaped groove and to take the thrust normally communicated to said bell crank from said expansible member. a j

5. The combination with a supporting hearing of a pin projecting therefrom having a V- 'shaped groove therein, a bell crank lever "provided with a hub sleeved upon said pin with a clearance, a knife edge member secured to and projecting inward from said hub into engagement with said V-shape'd groove adapted to take the normal thrust of actuation applied to said bell crank lever, said pin holding said bell crank from axial displacement.

6. The combination with abearing member, of a pin mounted thereon and projecting laterally therefrom having a V-shaped groove extending longitudinally thereof, a rockable member provided with a hub sleeved on said pin with a clearance, a knife edge bearing projecting laterally inward from said hub into engagement with said V-shaped groove, said knifeedge member being of a radial length to normally hold said hub out of peripheral contact with said pin.

7. The combination with a bearing member, of a pin mounted thereon and provided with a longitudinally extending V-shaped groove, a rockable member having a hub sleeved on said pin, a bushing for saidhub having a clearance on said pin and provided with an inward 1y extending knife edge bearing for engaging said V-shaped groove, said bearing being of a radial length to normally hold said bushing out of peripheral contact with said pin, means for locking said pin in different positions of rotative adjustment on said supporting bearing and means for locking said bushing in different positions of rotative adjustment in said iub.

8. The combination with an expansible member, of a bracket, a pin projecting from said bracket, a lever having a hub sleeved upon said pin and a portion arranged in the path of movement of said expansible member, and a knife edge bearing between said hub and pin arranged to receive the normal actuating thrust of said expansible member.

9. The combination with a bracket member, of an adjustable pin mounted thereon and provided with a seat, a rockable member having a hub sleeved on said pin and provided with an adjustable knife edge bearing for engaging said seat, means for locking said pin in different positions of rotatin adjustment on said supporting bracket, an means for looking said knife edge bearing in different positions of rotative adjustment in said hub.

In testimony whereof I aflix my signature.

BERNT GARLLUS. 

